Question Detail

PHY 102 Electromagnetic Induction 2 Objective Question

Question

In the phenomenon of Self Induction, what is the relationship between the magnetic flux (Φ) and the current (I) flowing through the coil at any instant?
Options
A They are inversely proportional (Φ ∝ 1/I).
B The magnetic flux is constant regardless of the current.
C They are directly proportional (Φ ∝ I).
Correct Answer
D The magnetic flux is proportional to the square of the current (Φ ∝ I²).
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 33 states: 'When the current starts flowing through the coil at any instant, it is found that, that the magnetic flux becomes directly proportional to the current passing through the circuit. The relation is given as: Φ = LI'.

Hint

This direct proportionality is the basis for defining self-inductance (L).

Question Info